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74HCT20 Dual 4-input NAND gate PHILIPS

74HCT20D Dual 4-input NAND gate PHILIPS

74HCT20N Dual 4-input NAND gate PHILIPS

74HCT21 Dual 4-input AND gate PHILIPS

74HCT221 Dual non-retriggerable monostable multivibrator with reset PHILIPS

74HCT221D Dual non-retriggerable monostable multivibrator with reset PHILIPS

74HCT221N Dual non-retriggerable monostable multivibrator with reset PHILIPS

74HCT237 3-to-8 line decoder/demultiplexer with address latches PHILIPS

74HCT237D 3-to-8 line decoder/demultiplexer with address latches PHILIPS

74HCT237DB 3-to-8 line decoder/demultiplexer with address latches PHILIPS

74HCT237N 3-to-8 line decoder/demultiplexer with address latches PHILIPS

74HCT238 3-to-8 line decoder/demultiplexer PHILIPS

74HCT238D 3-to-8 line decoder/demultiplexer PHILIPS

74HCT238DB 3-to-8 line decoder/demultiplexer PHILIPS

74HCT238N 3-to-8 line decoder/demultiplexer PHILIPS

74HCT238PW 3-to-8 line decoder/demultiplexer PHILIPS

74HCT240 Octal buffer/line driver; 3-state; inverting PHILIPS

74HCT240 OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS TI

74HCT240 Octal buffer/line driver; 3-state; inverting NXP

74HCT240 瑞斯特（RST）推出的74HCT240是一款八通道反相缓冲器/线驱动器，专为高驱动能力的总线接口应用而设计。该器件内部集成了两组相互独立的4位缓冲器，可通过配置灵活组合为8位系统，极大增强了设计的灵活性。其3态输出控制端（1OE与2OE）采用低电平有效逻辑，当置于高电平时，对应通道的输出将切换至高阻抗关断状态。 RSTTEK